22 BULLETIN 488, U. S. DEPARTMENT OF AGRICULTURE. 
5 and 6, hogged corn and had what tankage they would eat. The 
shotes used in this experiment had been in the alfalfa pasturing 
experiment and were very uniform in size, as will be seen from the 
weights given in Table IX. 
Both years the cornfield to be hogged was divided into six separate 
fields of one-third acre each by a fence of 26-inch hog wire between 
the corn rows. The cornfield used in 1914 was located on a break of 
high land, where in places the gravel came near the surface, causing 
some differences in the yield of the different plats. The plats used 
in 1915 were more uniform, but the corn, owing to hail and frost, was 
not as good as the corn that was hogged the year before. 
Each year the yield of each plat was estimated by counting all the 
stalks of corn and harvesting systematically the corn from 100 stalks ; 
that is to say. if a plat had a total of 3,100 stalks, the corn was har- 
vested from every thirty-fourth stalk. The harvested corn was dried, 
weighed, and returned to the plat to be eaten by the hogs. The total 
weight was divided by 100, to get the average yield per stalk har- 
vested. This average weight was then multiplied by the total number 
of stalks on the plat in order to get the yield. 
As the low-yielding plats became cleaned up, weighed quantities 
of corn were added, so that all the hogs would be kept on feed the 
same length of time. Enough corn was added as became necessary 
so that the hogs had corn before them all the time. When the last 
lot had cleaned up its plat the experiment was closed. In 1911 the 
hogs were in the corn plats from September 9 to Xovember 25. a 
period of 77 days. The 1915 test began October 6 and closed 
Xovember 30, covering a period of 55 days. 
The hogs were watered twice a day. Lots 5 and 6 were fed tank- 
age when they- were watered, the tankage being fed as a thin slop. 
The plats used by lots 3 and 4 opened into an alfalfa pasture. The 
hog house was placed in the alfalfa field, so that the hogs would 
have to pass through the alfalfa in going to and from the cornfield. 
All weeds and volunteer alfalfa were removed from the plats where 
the hogs got corn alone or corn and tankage. 
The results secured with the duplicate lots each year were rela- 
tively uniform. In no case were the gains cheaper or the quantity 
of corn required for 100 pounds of gain less in the corn lot than in 
the tankage lot, and in only one tankage lot were they cheaper than 
any pasture lot. One tankage lot in 1915. however, made slower 
gains than either of the pasture lots and slower than one of the corn 
lots ; and one corn lot made faster gains than one of the pasture lots. 
With this exception, the results of the duplicate lots were relatively 
the same. In 1915 the hogs required more corn per 100 pounds of 
gain than, was required in 1914. This was probably due to the 
poorer quality of the corn in 1915. The corn that was added to the 
